What does my airline owe me if it cancels my flight?
from Smarter Travel
Airlines do not guarantee flight schedules, so flight times are subject to change. In most cases, you shouldn't expect much if a flight is cancelled. Airlines cancel flights for many reasons, and the compensation you're entitled to depends on the circumstances of the cancellation. Some airlines will attempt to contact passengers if the flight is canceled prior to the day of departure, using contact information from the reservations process.
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